DE464969C - Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by milled pins - Google Patents

Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by milled pins

Info

Publication number
DE464969C
DE464969C DEA50388D DEA0050388D DE464969C DE 464969 C DE464969 C DE 464969C DE A50388 D DEA50388 D DE A50388D DE A0050388 D DEA0050388 D DE A0050388D DE 464969 C DE464969 C DE 464969C
Authority
DE
Germany
Prior art keywords
blades
impeller
hub
carried
centrifugal compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEA50388D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BROWN AG
BBC Brown Boveri France SA
Original Assignee
BROWN AG
BBC Brown Boveri France SA
Publication date
Priority to DEA50388D priority Critical patent/DE464969C/en
Application granted granted Critical
Publication of DE464969C publication Critical patent/DE464969C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/28Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30Vanes

Description

Laufrad für Kreiselverdichter mit Schaufeln, die in der Naben- und Deckscheibe durch angefräste Zapfen getragen werden Es ist bekannt, die Schaufeln von Kreiselverdichtern dadurch an Naben- und Deckscheiben des Laufrades zu befestigen, daß man die Schaufeln mit Nietzapfen versieht, welche mit denselben aus einem Stück bestehen.Impeller for centrifugal compressors with blades in the hub and The shovel is known to be supported by milled pegs to attach centrifugal compressors to the hub and cover disks of the impeller, that the blades are provided with rivet pegs, which are made from one piece with the same exist.

Diese Zapfen haben die Aufgabe, einerseits die Schaufel zu tragen und andererseits Naben- und Deckscheibe zusammenzuhalten. Es sind nun für das Tragen der Laufschaufeln wesentlich mehr solcher Nietzapfen nötig, als für die Verbindung von Nabe und Deckscheibe über die Schaufeln allein notwendig wären.These pins have the task of carrying the shovel on the one hand and on the other hand to hold the hub and cover washer together. There are now for wearing the rotor blades require significantly more such rivet pins than for the connection hub and cover disk over the blades alone would be necessary.

Diesen Umstand nutzt vorliegende Erfindung dahin aus, daß für das Laufrad Schaufeln verschiedenen Materials zur Verwendung gelangen, von denen nur die Zapfen derc Schaufeln des einen Materials vernietet werden. Nicht nur spart man hiexduxch an Nietarbeit, sondern auch bedeutend an Gewicht, da man nur einige wenige Schaufeln, d. h. die mit zu vernietenden Zapfen, dicker zu halten und aus weicherem, zum Nieten gut geeignetem Material zu wählen braucht, während in der Regel die große Mehrzahl der Schaufeln aus für eine verhältnismäßig hohe Beanspruchung geeignetem, also härterem Material und dünnerer Wandstärke bestehen kann. Naben- und Deckscheibe haben demzufolge weniger Gewicht zu tragen und können auch leichter gehalten werden, was das Gesamtgewicht weiter verringert. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.The present invention takes advantage of this fact that for the Impeller blades of various materials are used, only one of which the pegs of the blades of one material are riveted. Not just saves one hiexduxch on riveting, but also significantly in weight, since one only has a few few blades, d. H. those with tenons to be riveted to keep them thicker and out needs to choose a softer material that is well suited for riveting, while in the Usually the great majority of the blades are made for a relatively high load suitable, so harder material and thinner wall thickness can exist. Hub and cover plate therefore have to carry less weight and can also be lighter be held, which further reduces the overall weight. In the drawing is a Embodiment of the invention shown.

Abb. i stellt eine an sich bekannte Schaufel mit angefrästen Nietzapfen dar, Abb.2 ein Laufrad gemäß der Erfindung, Abb. 3 eine Einzelheit.Fig. I shows a well-known shovel with milled rivet pins Figure 2 shows an impeller according to the invention, Figure 3 shows a detail.

i sind die urgenieteten Schaufeln aus dem einen und 2 die genieteten Schaufeln aus dem andern Material. Die entsprechenden Niete sind mit ¢ bzw. 3 bezeichnet.. Wie man sieht, sind von 24 Schaufeln- des in Abb. 2 dargestellten Laufrades nur vier Schaufeln von der zweitgenannten Art. Die Zapfen q. der urgenieteten Schaufeln können die Seitenscheiben entweder ganz (oben rechts der Abb.3) oder nur teilweise (unten rechts der Abb.3) durchdringen. Letztere Ausbildung hat den Vorteil geringerer Schwächung der Schaufeln.i are the unriveted blades from one and 2 are the riveted Shovels made of the other material. The corresponding rivets are marked with ¢ or 3 .. As you can see, there are only 24 blades of the impeller shown in Fig. 2 four blades of the second type mentioned. The pins q. of the riveted blades the side windows can either be completely (top right of Fig. 3) or only partially (bottom right of Fig. 3). The latter training has the advantage of lesser Weakening of the blades.

Claims (2)

PATE NTANSYRÜC:üE: i. Laufrad für Kreiselverdichter mit Schaufeln, die in der Naben- und Deckscheibe durch aasgefräste Zapfen getragen werden, dadurch gekennzeichnet, daß das Laufrad Schaufeln verschiedenen Materials enthält, von denen nur die Zapfen der Schaufeln des einen Materials vernietet sind. PATE NTANSYRÜC: üE: i. Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by chamfered pegs, thereby characterized in that the impeller contains blades of different material, of which only the tenons of the blades of one material are riveted. 2. Laufrad nach Anspruch i, dadurch gekennzeichnet, daß die urgenieteten Zapfen die Seitenscheiben nur teilweise durchdringen.2. impeller after Claim i, characterized in that the non-riveted pins are the side panels only partially penetrate.
DEA50388D Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by milled pins Expired DE464969C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA50388D DE464969C (en) Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by milled pins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA50388D DE464969C (en) Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by milled pins

Publications (1)

Publication Number Publication Date
DE464969C true DE464969C (en) 1928-09-03

Family

ID=6937376

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA50388D Expired DE464969C (en) Impeller for centrifugal compressor with blades, which are carried in the hub and cover disk by milled pins

Country Status (1)

Country Link
DE (1) DE464969C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700230A1 (en) * 1987-01-07 1988-07-21 Hauni Werke Koerber & Co Kg Fan impeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700230A1 (en) * 1987-01-07 1988-07-21 Hauni Werke Koerber & Co Kg Fan impeller

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